Regular Saiyan - All full-blooded Saiyans share
several common features: All are born with the hairstyle they keep through out life all are very strong and muscular and they
all have a tail. The tail is a weakness for weaker Saiyans, as any pressure applied to it is temporally paralyzing, but Saiyans
who have strengthened their tail, are not affected at all by this. The tail is also necessary for the transformation to the
Oozaru state. Also all Saiyans have a strong love to fight, which can stometimes be a weakness.

Oozaru
- When any Saiyan with a tail is exposed to the light of a full moon, this sets off a chain reaction from a gland in their
tails and causes them to transform into a giant ape (Oozaru is Japanese for "Big Monkey"). This causes the Saiyan's power
to be multiplied by 10. With training, this form can be controlled but Goku and Gohan were never trained this way so they
went out of control and destroyed all in their way.

Giji (False)
Super Saiyan - This is a mid point between a Saiyan's regular from, and Super Saiyan. Goku reached this form in DBZ
Movie #4, when he was really mad at Lord Slug. This is where the Saiyan can almost become a Super Saiya-Jin, but is lacking
one or two things. Achieved By: Goku

Super Saiyan - Going Super Saiyan gives the saiyan
a huge power boost along with golden hair and green eyes. The first person we see reach SSJ in the series is Goku when fighting
Frieza. The transformation is triggered when someone of pure heart (Good or Bad) experiences extreme emotion, this takes over
and allows the change. With training, afterwards the transformation is controlled and happens at will. Achieved By: Broly,
Goku, Vegeta, Future Trunks, Gohan, Trunks, Goten, Goku Jr, Vegeta Jr, Vegito and Gogeta

Super Saiyan 2nd Grade - This form is a much more
powerful version of Super Saiyan, however, like USSJ, there is a slight muscle mass increase, which reduces speed. This is
the form Vegeta uses for the fight with Cell, as the speed decrease is not as much as USSJ but also not as much of a strength
increase. We also see Goku in this form when he is training in the Hyperbolic Time Chamber with Gohan. Achieved By: Goku,
Vegeta, Future Trunks

Super Saiyan 3rd Grade - More commonly known as
Ultra Super Saiyan, this is a midpoint between SSJ and SSJ2. At this stage a Saiyan's muscle mass dramatically increases,
but they take a big hit in their speed. Goku demonstrated this to Gohan, during the Cell Game Saga inside the Hyperbolic Time
Chamber. Vegeta also noticed this disadvantage during his training. Trunks however failed to spot this, and this led to his
defeat by the weaker, but much faster Cell. Achieved By: Goku, Vegeta, & Future Trunks

Super Saiyan Full Power - During the training time
before the Cell Games , Goku comes up with an idea. He wanted himself and Gohan to try and remain as Super Saiyans for as
long as they could, and so get their bodies used to the form. The result is that the Saiyan can stay in the form for long
periods of time with little or no effort. It is mastery of the Super Saiyan form. Achieved By: Goku and Gohan

Super Saiyan 2 - This stage is very similar to
SSJ (in appearence), the only differences being lightning bolts that surround the Saiyan and having slightly longer and stiffer
hair. In this form power and speed are both increased over SSJ. This form was first achieved by Gohan whilst battling Cell,
and is too triggered by extreme emotion. Achieved By: Gohan, Goku, Vegeta and Vegetto

Super Saiyan 3 - This form is the strongest of
all Saiyan forms in the manga. Only Goku and the fused body of Gotenks can handle it. It is characterized by very long, full
hair and the Saiyan's eyebrows disappearing. Goku achieves this form whilst training in Heaven in between the Cell and Buu
Sagas. This forms increases power and speed even more, but also uses a lot of power, so it cannot be maintained for very long.
Achieved By: Goku and Gotenks

Mystic Saiyan - This form is achieved by Gohan
after his power up from Old Kai. During this state his power is fully maximized. So much so that he does not need to ever
go Super Saiyan to increase his power. It looks exactly the same as his normal state, as you can see from the picture. If
the Old Kai had finished the power up Gohan would have been stronger than SSJ3 Goku, but he never finishes because he is too
lazy. Achieved By: Gohan

Golden Oozaru - This is very similar to the regular
Oozaru form except the fur is golden not brown. It is also of course much stronger. To reach this stage a Saiyan must have
a tail and receive more waves than usual from the moon. Once the Saiyan controls the massive power of this from, they transform
into Super Saiyan 4. Achieved By: Goku, Vegeta, and Baby Vegeta

Super Saiyan 4 - This is a form that causes some
controversy, since it doesn't appear in the manga some people say that it isn't a true form, but I am going to agree with
the common consensus and say it is. In this form the hair stays black and becomes long, but shorter than SSJ3 and red fur
covers most of the upper body, the eyes turn yellow with red outlines and red eyelids. Goku is the only true person to reach
this form, but Bulma creates a device that allows Vegeta to reach it as well. Achieved By: Goku, Vegeta and Gogeta

Legendary Super Saiyan - Alot of people would say
that the Legendary Super Saiyan is Goku because he reaches all the known levels. On the other hand Alot of people would say
its Broly because he was born with such a high power level and reached Super Saiyan in a whole nother way. FUNimation claims
the true Legendary Super Saiyan is Broly but beyond that there is no "secret" in the series that lets us know for sure its
just something we will all have do decide on ourselves.